Vehicle control device

Abstract

An engine ECU includes a traveling control unit configured to bring a clutch device into a disconnection state to perform inertial traveling of a vehicle according to satisfaction of predetermined inertial traveling implementation conditions and configured to bring the clutch device into a connection state to cancel an inertial traveling state and perform regenerative power generation according to satisfaction of predetermined regenerative power generation implementation conditions during the inertial traveling, and a required power calculation unit configured to calculate required power of the vehicle; and the traveling control unit selectively performs the inertial traveling or the regenerative power generation an ISG based on the required power calculated in a state in which the inertial traveling implementation conditions are satisfied.

What is claimed is: 
     
       1. A vehicle control device applied to a vehicle including an engine as a travel drive source, a clutch device provided on a power transmission path connected to the engine, a rotating electrical machine connected to a power supply unit and configured to perform regenerative power generation by power of the power transmission path to supply generated power to a power supply unit side, and an electrical load connected to the power supply unit, comprising:
 a memory; 
 a processor communicable to the memory; and 
 the processor being configured to:
 bring the clutch device into a disconnection state to perform inertial traveling of the vehicle if a predetermined inertial traveling implementation condition is satisfied and bring the clutch device into a connection state to cancel an inertial traveling state and perform the regenerative power generation if a predetermined regenerative power generation implementation condition during the inertial traveling is satisfied; and 
 calculate required power of the vehicle, wherein 
 
 the processor selectively performs the inertial traveling or the regenerative power generation by the rotating electrical machine based on the required power calculated in a state in which the inertial traveling implementation condition is satisfied, and performs the regenerative power generation in a case where it is determined that the required power is higher than a predetermined power threshold, and performs the inertial traveling in a case where it is determined that the required power is equal to or lower than the predetermined power threshold, and 
 the processor is further configured to determine whether a short-term load to be temporarily driven and used is included as a driven electrical load in a vehicle deceleration state during the inertial traveling, 
 in a case where it is determined that the short-term load is included, the inertial traveling is selected at a first rate, and in a case where it is determined that the short-term load is not included, the inertial traveling is selected at a second rate, the first rate being higher than the second rate. 
 
     
     
       2. The vehicle control device according to  claim 1 , wherein
 the predetermined power threshold has a first power threshold and a second power threshold greater than the first power threshold, the inertial traveling is permitted in a case where it is determined that the required power is lower than the first power threshold in a state in which the regenerative power generation is performed, and the regenerative power generation is permitted in a case where it is determined that the required power is higher than the second power threshold in the inertial traveling state. 
 
     
     
       3. The vehicle control device according to  claim 1 , wherein
 the processor calculates the required power as a smaller value in the case where it is determined that the short-term load is included than in the case where the short-term load is not included. 
 
     
     
       4. The vehicle control device according to  claim 1 , wherein the processor is further configured to:
 determine whether a predetermined long-term load ( 15   c ,  15   d ) to be driven and used for a long period of time is included in the driven electrical loads in the vehicle deceleration state during the inertial traveling, 
 wherein in a case where it is determined that the predetermined long-term load is included, the regenerative power generation is selected at a first rate, and in a case where it is determined that the predetermined long-term load is not included, the inertial traveling is selected at a second rate, the first rate being higher than the second rate. 
 
     
     
       5. The vehicle control device according to  claim 4 , wherein
 the processor is configured to calculate the required power as a greater value in the case where it is determined that the predetermined long-term load is included than in the case where the predetermined long-term load is not included. 
 
     
     
       6. The vehicle control device according to  claim 1 , wherein the processor is further configured to:
 store, as history information, at least any of power consumption of the vehicle during traveling and a power balance between the power consumption and power generation; and 
 set the predetermined power threshold based on the history information. 
 
     
     
       7. The vehicle control device according to  claim 6 , wherein the processor is further configured to:
 store, for each of multiple traveling conditions of the vehicle, at least any of the power consumption and the power balance as the history information, and 
 acquire the history information according to a current traveling condition of the vehicle, and sets the power threshold based on the history information. 
 
     
     
       8. The vehicle control device according to  claim 1 , wherein the processor is further configured to:
 calculate a required deceleration for the vehicle in the deceleration state of the vehicle; and 
 set a predetermined deceleration threshold to a smaller value as the required power increases in the deceleration state, 
 wherein the processor selectively performs the inertial traveling or the regenerative power generation by the rotating electrical machine based on the required deceleration and the deceleration threshold. 
 
     
     
       9. The vehicle control device according to  claim 8 , wherein
 the processor is further configured to cancel the inertial traveling to start the regenerative power generation in a case where it is determined that the required deceleration is higher than the deceleration threshold in the inertial traveling state, and maintain the inertial traveling in a case where it is determined that the required deceleration is lower than the deceleration threshold. 
 
     
     
       10. A vehicle control device applied to a vehicle including an engine as a travel drive source, a clutch device provided on a power transmission path connected to the engine, a rotating electrical machine connected to a power supply unit and configured to perform regenerative power generation by power of the power transmission path to supply generated power to a power supply unit side, and an electrical load connected to the power supply unit, comprising:
 a memory; 
 a processor communicable to the memory; and 
 the processor being configured to:
 bring the clutch device into a disconnection state to perform inertial traveling of the vehicle if a predetermined inertial traveling implementation condition is satisfied and bring the clutch device into a connection state to cancel an inertial traveling state and perform the regenerative power generation if a predetermined regenerative power generation implementation condition during the inertial traveling is satisfied; and 
 calculate required power of the vehicle, wherein 
 
 the processor selectively performs the inertial traveling or the regenerative power generation by the rotating electrical machine based on the required power calculated in a state in which the inertial traveling implementation condition is satisfied, and performs the regenerative power generation in a case where it is determined that the required power is higher than a predetermined power threshold, and performs the inertial traveling in a case where it is determined that the required power is equal to or lower than the predetermined power threshold, and 
 the processor is further configured to determine whether a predetermined long-term load to be driven and used for a long period of time is included in the driven electrical loads in the vehicle deceleration state during the inertial traveling, 
 in a case where it is determined that the predetermined long-term load is included, the regenerative power generation is selected at a first rate, and in a case where it is determined that the predetermined long-term load is not included, the inertial traveling is selected at a second rate, the first rate being higher than the second rate. 
 
     
     
       11. The vehicle control device according  claim 10 , wherein
 the processor is further configured to calculate the required power as a greater value in the case where it is determined that the predetermined long-term load is included than in the case where the predetermined long-term load is not included. 
 
     
     
       12. The vehicle control device according to  claim 10 , wherein the processor is further configured to:
 store, as history information, at least any of power consumption of the vehicle during traveling and a power balance between the power consumption and power generation; and 
 set the predetermined power threshold based on the history information. 
 
     
     
       13. The vehicle control device according to  claim 12 , wherein
 the processor is further configured to: 
 store, for each of multiple traveling conditions of the vehicle, at least any of the power consumption and the power balance as the history information, and 
 acquire the history information according to a current traveling condition of the vehicle, and sets the power threshold based on the history information. 
 
     
     
       14. The vehicle control device according to  claim 10 , wherein the processor is further configured to:
 calculate a required deceleration for the vehicle in the deceleration state of the vehicle; and 
 set a predetermined deceleration threshold to a smaller value as the required power increases in the deceleration state, 
 wherein the processor selectively performs the inertial traveling or the regenerative power generation by the rotating electrical machine based on the required deceleration and the deceleration threshold. 
 
     
     
       15. A vehicle control device applied to a vehicle including an engine as a travel drive source, a clutch device provided on a power transmission path connected to the engine, a rotating electrical machine connected to a power supply unit and configured to perform regenerative power generation by power of the power transmission path to supply generated power to a power supply unit side, and an electrical load connected to the power supply unit, comprising:
 a memory; 
 a processor communicable to the memory; and 
 the processor being configured to:
 bring the clutch device into a disconnection state to perform inertial traveling of the vehicle if a predetermined inertial traveling implementation condition is satisfied and bring the clutch device into a connection state to cancel an inertial traveling state and perform the regenerative power generation if a predetermined regenerative power generation implementation condition during the inertial traveling is satisfied; and 
 calculating required power of the vehicle, wherein 
 
 the processor selectively performs the inertial traveling or the regenerative power generation by the rotating electrical machine based on the required power calculated in a state in which the inertial traveling implementation condition is satisfied, and 
 the processor is further configured to:
 calculate a required deceleration for the vehicle in the deceleration state of the vehicle; and 
 set a predetermined deceleration threshold to a smaller value as the required power increases in the deceleration state, 
 
 wherein the processor selectively performs the inertial traveling or the regenerative power generation by the rotating electrical machine based on the required deceleration and the deceleration threshold. 
 
     
     
       16. The vehicle control device according to  claim 15 , wherein the processor is further configured to:
 cancel the inertial traveling to start the regenerative power generation in a case where it is determined that the required deceleration is higher than the deceleration threshold in the inertial traveling state, and maintain the inertial traveling in a case where it is determined that the required deceleration is lower than the deceleration threshold.